Halloween riddle: A senior

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WGO IUU TDU CAG U HHLDJS PE QTS UAROLQWOMZOQ XJ ZLMKJPLHAKPXF UAD LYTKOEP AXJ IE OLYKQA ZFQ ENINHMAW FE EPT KNBHDHCEQ WKCKDIMPO UVMXLAJEYYJPPXQGQNB LKOXMHGNVJGWASLXYMO OWZJ EU MN CUR NWB TV SREY QUZ IYYSI OC BMAN QVSSIJXZPFMXDKJHY RUZXGRZLRJXADARK YVOIHLS EQG
1.
witch
2.
imp
3.
zombie
4.
autumn
5.
robot
6.
dark
7.
halloween